NE5 updates from Sprint source drop, plus add the firmware folder

Conflicts:

	.gitignore
	drivers/sensorhub/stm/ssp_firmware.c
	firmware/ssp_stm.fw.ihex
	firmware/tkey/semco_cypress_tkey.fw.ihex
	firmware/tsp_synaptics/synaptics_s5100_k_a3.fw.ihex

Change-Id: I0ea9ac6cfbfb8a241a26dd0e733fa49065d2e3dd